Hydraulic control apparatus for an automatic transmission
US6569050B2 · kind B2 · utility
6Cited by
19References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Dec 22, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/00
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic control apparatus for an automatic transmission including a hydraulic pressure source, hydraulic paths, hydraulic servos for operating friction elements which are coupled with the hydraulic source an the hydraulic paths, a control device arranged on the hydraulic paths for operating engagement release through supply/removal of hydraulic pressure to the hydraulic servos and valves which are arranged on the hydraulic path for cutting off hydraulic pressure from the hydraulic pressure source to the hydraulic servo with hydraulic pressure in the downstream side of the control device as signal pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.